Learning Forum

[Wensen Z]

Hello, I am currently doing an analysis about Cold Formed Steel Beam to Column Connection with Gusset Plate, After Assigning Materials for every geometry and applying a function remote force, my analysis doesnt seem to be converging (masuki foto kurva sm analysis settings td), is there anything else I need to do to make the analysis converging? In this model I tried using neqit for various numbers, and the last time i used 5000. Here I attach the result I get when i ran the model using my current settings. If you need any info or data about my model, just let me know. Thankyou

[John Doyle]

It appears the code is struggling to find force balance.  Rather than specifying a larger NEQIT limit (max allowable number of Newton-Raphson equilibrium iterations per substep), try turning Autotime Stepping ON and specifying many more substeps.  Also, turn on large deflection to include stress stiffening effects.  Perhaps, as a troubleshoot step, try removing the remote force and applying a remote displacement (as a test) to the end of the beam, to assess the relationship between force and displacement for the application.  This can help determine how many substeps you need to achieve convergence with the force based load.